Metallic lathing



PATENT' "freien,

ALEXANDER R. FORDYCE, OF NEWARK, NEW JERSEY.

METALLIC LATHING.v

SPECIFICATION forming part of Letters Patent No. 585,563, dated June 29, 1897.

Application filed April 5, 1897. Serial No. 630,680. l(No model.)

To all LU/tout it may concern,.-

Be it known that I, ALEXANDER R. Fon- DYCE, a citizen of the United States, and a resident of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Metallic Lathing, of which the following is a full, clear, and exact description, such as will enable thcse skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to improvements in metallic lathing or skeletons which are used in the construction of reproof walls, ceilings, partitions, ttc.

It relates more particularly to that class of skeletons which is terme( metallic lathing, which when attached to suitable supports forms the foundation for the filling that goes to make the body of such constructions.

It relates especiallyto improvements in that kind of metallic lathing that is made by slitting a sheet of metal and turning back the edges of the slits to provide openings for the passage of the filling and also to form keys. In lathing of this character as heretofore made the keys generally have been turned out from the plate on the same side, thereby leaving the other side comparatively smooth and keyless. When lathing of the latter description is used, the filling placed on the smooth side has to depend on that part of the same that enters the apertures in the plate for support. This is objectionable, as the filling has very little tenacity inits green state and would be very apt to be displaced on the plain side of the plate, as the comparatively small quantity of filling entering the apertures would not be sufficient to support the main body, and, furthermore, when lathing having a plain side is placed with its plain side against a iiat surface the filling cannot pass through the apertures to any extent to form a sufficient clench. It has been sought to overcome this last difficulty by corrugatin g the lathing. In this last instance the corrugations form pockets into which the filling passes through the apertures and thereby forms a clench. It has been found to be very difficult to make a lathing of this character,

especially when the keys have considerable size, as the latter cannot be bent easily to conform with the corrugations. In the invention in the present instance itis proposed to overcome these difficulties by turning the keys out from both sides cf the plate, thereby forming a reversible lathinghaving both faces alike.

The invention consists in the novel construction, such as will be herein after fully described, pointed out in the appended claims, and illustrated in the accompanying drawings.

In the accompanying drawings, in which similar letters of reference designate corresponding parts, Figure l is a plan view of a section of lathing embodying the invention.

Fig. 2 is a sectional view on the line 2 2 of Fig. l. 3 3.

lathing applied to a iiat surface and embed-4 ded in a filling.

In carrying out the invention a metallic plate A of the required dimensions is provided with parallel ribs a c, extending its entire length. These ribs serve to strengthen the plate, so that the latter will be able to sustain any considerable stress that may be applied to the same in a direction at right angles to the ribs. These ribs also divide the plate into panels B B.

In each of the panelsB B a row of apertures b b is formed. Each aperture is substantially in the form of an elongated isosceles triangle. Their relative arrangement is such that the apex of one aperture points toward the base of the adjacent aperture in the same row. An aperture is formed by slitting the panel and turning back the edges of the metal to form the flanges b and b2 and also the spur b3. The flanges b' and b2 are irregular in form and approach each other at their outer edges to form a key having irregular sides.

The apertures of the several rows are arranged so that those of one row break joint with those of an adjacent row, and also so that the apertures in one rowhave their apeXes pointing in one direction while the apertures in an adjacent row have their apeXes pointing in the opposite direction, and, furthermore,

IOO

the rows of keys alternately project from opposite sides of the plate, so that both sides have the same formation.

In the construction hereinbefore described a lathingor skeleton of considerable thickness is produced which is especially adapted to form the foundation of a partition where considerable strength is required and in which the skeleton must have considerable depth to enable it to properly support the filling when the partition has considerable thickness. This is secured by the plate retaining considerable of its original structure and also by the keys projecting from opposite sides of the plate, and the peculiarly-shaped apertures, which will allow the filling to secure a strong and effective clench. The construction also provides a lathing particularly adapted to be used in applying a plastic material to fiat surfaces. Vhen the lathing is placed against such a su rface, the projecting keys prevent the main body of the plate from coming in contact with said surface and thereby allows the plastic filling to pass behind the lathing and thereby secure a proper clench.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

l. A lathing consisting of a metallic plate having an elongated aperture formed therein and the metal displaced by the formation of said aperture turned back to form two irregular elongated flanges, the said flanges constitutin ga substantially continuous collar forming a key having irregular sides.

3. A lathin g consisting of a metallic plate i having apertures formed therein, the metal displaced by the formation of said apertures turned back to form flanges, the said flanges projecting from the body` of the plate to form keys, the said keys arranged in rows so that those of one row break joint with and overlap those of an adjacent row, and the said keys also arranged so that alternate rows of the same project from opposite sides of the plate.

4E. A lathing consisting of a metallic plate having elongated apertures formed therein, the metal displaced by the formation of each of said apertures turned back to form two irregular elongated flanges, the said anges forming a key with irregular sides, and the said keys arranged in rows projecting alternately from opposite sides of the plate, and also arranged so that the keys of one row break joint with and overlap the keys of an adjacent row.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

ALEX. R. FORDYCE. Vitnesses:

AUGUST W. RosINGnR, CHARLES T. GLEN. 

